docs: def chunk_zip_entry(zipfile, name, chunksize=_CHUNKSIZE):
      """
      opens an entry from an openex zip file archive and yields
      sequential chunks of data from the resulting stream.
      """
  
      with open_zip_entry(zipfile, name, mode='r') as stream:
          data = stream.read(chunksize)
          while data:
              yield data
              data = stream.read(chunksize)